Gurobi 5.6.3 (linux64) logging started Wed Oct  8 00:58:28 2014

Optimize a model with 30451 rows, 30450 columns and 91002 nonzeros
Presolve time: 0.73s
Presolved: 30451 rows, 30450 columns, 91002 nonzeros
Variable types: 0 continuous, 30450 integer (30450 binary)
Found heuristic solution: objective 18.8061550

Root relaxation: objective 1.301328e+01, 1956 iterations, 0.19 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

*    0     0               0      13.0132792   13.01328  0.00%     -    1s

Explored 0 nodes (1956 simplex iterations) in 1.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.301327918036e+01, best bound 1.301327918036e+01, gap 0.0%